Which of the following statements is false about performance?

It is often important to determine if performance has occurred to determine if the other party is obligated.

A salesman can be required to deliver the car before the buyer is obligated to pay.

An employer is not obligated to pay an hourly employee if she does not work her shift.

A customer can be required to pay at the time he takes his goods.

A person never has to pay for an ordered product if it does not exactly match the description.